The Video Game economy is brutal. There's a reason why LAN party games have phased out to near-obsolescence, it's apparently no longer worth it for anyone to put large resources and money into a game that doesn't tether the player with a closed network and platform made specifically to extract as much $$ from him as possible.
As someone who planned a game which could be hosted by anyone, I would love to know how to actually make enough money to finish that game. You either need to pour lots of money upfront to make great quality expensive game and hope that your high price doesn't scare people or make a cheap-but-monthly-payment game to be able to continue development during playing.
No, that's a great idea! Sidesteps many issues, like having a good specs required for typical server (fairly recent graphics card for physics simulation and lots of storage).
I would put in that list:
Sea of Thieves -> to play only with friends (no PvP)
Battlefield <X> -> to mod and fool around with my friends
Overwatch -> to train, mod, etc.
Star Citizen -> aside from the usual "when the game will be released" let us run our little servers!!
I am sure I am forgetting obvious ones in this list...
Please make games "hostable" and "moddable"! <3